Suppose that a random sample of adult males has a sample mean heart mass of x¯=310.1 grams, with a sample standard deviation of s=6.6 grams. Since adult male heart masses are generally symmetric and bell-shaped, we can apply the Empirical Rule. Between what two masses do approximately 68% of the data occur?  Round your answer to the nearest tenth.     Approximately  $68\%$68%​ of the men's heart masses are between _____  grams and ______  grams.

Question 5: what percent of batteries will have a range between 380 miles and 420 miles?

Please help me with this question.

An insurance company is looking over accident statistics. They want to model the population of all drivers for the population parameter of the standard deviation and variance of the age of the driver involved in an automobile accident. They have a sample of 100 accidents from around the country. The age of the driver in each of these accidents is provided below. Use Excel to calculate the sample standard deviation and the sample variance. Round your answers to one decimal place. Do not round until you've calculated your final answer "Age of people in accident"48643346436728189044472440202747683248472248217347302918487364454920205066654187873417203176493089672222455023481746382942254720463119214227226621236675744621461969202048238851284918204522313823284939   Standard deviation:  Variance:

Need help with a review statistics question ASAP

* 00 F. Question 5 A particular fruit's weights are normally distributed, with a mean of 200 grams and a standard deviation of 30 grams. The heaviest 4% of fruits weigh more than how many grams? Give your answer to the nearest gram. Submit Question MacBook Air 08 F3 F5 F8 23 2. 3. J S H. B.

answer please

Question 13 The time to complete an exam is approximately Normal with a mean of 43 minutes and a standard deviation of 5 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. H = 43 o = 5 H-30 u-20 u+ 20 u+ 30 00 Question Help: e Written Example Message instructor Submit Question Jump to Answer

QUESTION 13 Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 10, 9, 20, 12, 19, 11, 14, 13, 20 1.8 4.4 4.1 4.7 O00

QUESTION 12 You hypothesize that drinking water increases test scores so you design a study comparing test scores between people who drink water and people who do not drink water.You collect data on 62 people and find that in your sample there are 27 people who do not drink water and 35 people who drink water. The mean test score for non-water drinkers is 62 with a standard deviation of 13, while the mean score for those who drink water is 75 with 11 standard deviation. Above you have calculate the t-statistic and found the critical value of t. Based on this information, is the difference between your two means STATISTICALLY SIGNIFICANT? OYes, because the t-statistic value calculated was less than the critical value of t, indicting that p .05 O Yes, because the t-statistic value calculated was larger than the critical value of t, indicating that p .05